<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="LoginServlet">
Username:<input type="text" name="username"><br>
Sex:<input type="text" name="sex"><br>
<input type="submit" value="登录"><br>

</form>
</body>
</html>